1 Rel Ruby (+7NF) moriq 関西 RejectKaigi2007

2 SQL なんでこんな言語なんだ？ SELECT * FROM r SELECT * FROM r WHERE c SELECT name FROM r WHERE c SELECT... FROM (SELECT name FROM r WHERE c) JOIN s

3 Tutorial D そこで Tutorial D ですよ r r[c] r[c]{name} r[c]{name} JOIN s

4 D data language specification torial_D

5 Rel Tutorial D の Java 実装 An Implementation of Date and Darwen's "Tutorial D"

6 Rel Ruby Rel を Ruby で実装してみた trunk/rel-ruby/

7 O/R mapper Object Model Relational Model なんでマッピングなんだ？

8 Relation Object Relation.new(heading) r = Relation.new(id: Integer, name: String)

9 Tuple Object Tuple.new(attributes) r << Tuple.new(id: 1, name: 'matz') r << {id: 1, name: 'matz'}

10 Relational Ruby Ruby で Relational Model を表現 r r.select { |t| t.name == 'matz' } r['name'] r['name'].join(s)

11 Ruby(AR) vs DBMS validation reference constraint inheritance locking logging index validation reference constraint inheritance locking logging index

12 App + (RelEngine + Storage) (App + RelEngine) + Storage

13 Thank you